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United States Patent | 6,172,159 |
Gaal, Jr. ,   et al. | January 9, 2001 |
A water-reducible polyester resin for use in producing urethane coatings comprises the reaction product of: a) hexahydrophthalic anhydride, trimellitic anhydride or phthalic anhydride; b) 1,4-cyclohexane dimethanol or trimethylol propane or mixtures thereof; and c) a polyethylene glycol selected from the group consisting of polyethylene glycols, methoxy polyethylene glycols and trifunctional polyethylene glycols having a molecular weight no greater than approximately 1050; the reaction product having a functionality between approximately 2 and 2.6. Another water-reducible polyester resin comprises the same components and a specified nonionic surfactant. Urethane coatings containing such polyester resins and a diisocyanate are also disclosed.
Inventors: | Gaal, Jr.; Robert J. (St. Louis, MO); Heitland; Roger W. (St. Louis, MO) |
Assignee: | Accures Corporation (St. Louis, MO) |
Appl. No.: | 484625 |
Filed: | January 18, 2000 |
Current U.S. Class: | 524/604; 524/539; 524/600; 524/601; 524/773; 524/802; 524/843; 525/437; 525/440; 525/444; 528/272; 528/296; 528/300; 528/301; 528/302; 528/307; 528/308 |
Intern'l Class: | C08J 079/00; C08F 020/00 |
Field of Search: | 528/272,296,300,301,302,307,308 524/539,600,601,604,773,802,843 525/437,440,444 |
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